Method for growing crystals



Dec. 12 1961 L MERKER METHOD FOR GROWING CRYSTALS Fi1ed oct. 15 1957 INVENTOR Leon Merker AGENT 

1. A METHOD FOR PRODUCING A SUBSTANTIALLY STRAIN-FREE MONOCRYSTALLINE MASS BY FLAME FUSION COMPRISING THE STEPS OF: FEEDING A POWDERED FEED MATERIAL TO A BURNER FLAME, FUSING SAID FEED MATERIAL IN SAID BURNER FLAME TO FORM A MONOCRYSTALLINE MASS, ADDING SUPPLEMENTARY HEAT TO ALL PORTIONS OF SAID MONOCRYSTALLINE MASS SIMULTANEOUSLY PRIOR TO SHUTTING OFF SAID BURNER FLAME TO MAINTAIN THE TEMPERATURE OF SAID MASS SUBSTANTIALLY UNCHANGED UPON SHUTTING OFF SAID BURNER FLAME AND TO DISTRIBUTE HEAT UNIFORMALLY THROUGHOUT SAID MASS PRIOR TO SHUTTING OFF SAID BURNER FLAME, AND THEN SHUTTING OFF SAID BURNER FLAME 